code: def preprocess_classes(input: Tensor) -> Tensor:
      """Preprocess input class tags."""
      # TODO: We may allow list here.
      return input
  
imports: from functools import wraps
  from typing import Any, Callable, Dict, List, Optional, Tuple, Union
  import torch
  from torch.distributions import Beta, Uniform
  from kornia.core import Tensor, as_tensor
  from kornia.geometry.boxes import Boxes
  from kornia.geometry.keypoints import Keypoints
  from kornia.utils import _extract_device_dtype
label_desc: Use image node_id 20 for calling a global function with example usage: preprocess_classes(input) and returns: input